Year	Percent
1950	10.70733
1955	10.67426
1960	9.55184
1965	9.11468
1970	8.48953
1975	8.58589
1980	8.65926
1985	7.73325
1990	6.47183
1995	5.29092
2000	4.7757
2005	4.63727
2010	5.32666
2015	5.43422
2020	5.14783
2025	4.749
2030	4.42236
2035	4.36408
2040	4.58573
2045	4.86461
2050	4.96874
2055	4.87879
2060	4.74109
2065	4.70995
2070	4.82948
2075	5.011
2080	5.12773
2085	5.09998
2090	4.97904
2095	4.86853
2100	4.84028