Year	Percent
1950	9.66378
1955	9.44236
1960	9.27072
1965	8.96968
1970	8.6226
1975	8.31147
1980	7.93226
1985	7.52874
1990	7.97497
1995	7.6974
2000	7.32492
2005	6.80778
2010	6.21808
2015	5.80494
2020	5.91598
2025	6.4394
2030	7.45039
2035	8.80979
2040	10.36092
2045	11.95365
2050	13.28094
2055	14.18717
2060	14.81229
2065	15.40384
2070	16.3854
2075	17.86874
2080	19.37235
2085	20.68961
2090	21.88466
2095	23.02157
2100	24.15414