Year	Percent
1950	15.06639
1955	15.33436
1960	14.97104
1965	14.53342
1970	13.80591
1975	13.46291
1980	12.848
1985	12.50265
1990	12.28115
1995	12.15652
2000	12.41602
2005	12.77597
2010	12.75352
2015	12.03783
2020	12.57062
2025	14.50134
2030	16.99694
2035	19.41378
2040	21.37222
2045	22.14544
2050	22.52545
2055	23.31835
2060	24.10109
2065	24.989
2070	25.61689
2075	25.69402
2080	25.61972
2085	25.61175
2090	25.67558
2095	25.69088
2100	25.60017