Year	Percent
1950	12.03737
1955	13.64065
1960	15.20734
1965	16.24643
1970	16.52965
1975	16.71865
1980	13.32431
1985	10.6412
1990	11.30954
1995	11.37283
2000	10.7632
2005	10.16693
2010	9.27208
2015	8.65619
2020	8.35728
2025	7.92007
2030	7.51911
2035	7.14279
2040	6.76353
2045	6.43821
2050	6.1839
2055	5.97091
2060	5.78735
2065	5.61086
2070	5.45235
2075	5.31764
2080	5.20387
2085	5.12305
2090	5.05383
2095	4.99416
2100	4.93868