Year	Percent
1950	11.09093
1955	10.60948
1960	10.31694
1965	11.30509
1970	12.36733
1975	12.59399
1980	11.47783
1985	10.78914
1990	10.02046
1995	10.14545
2000	10.79148
2005	10.11633
2010	8.95311
2015	6.53484
2020	5.18256
2025	5.55265
2030	5.42324
2035	5.41587
2040	5.26028
2045	4.90362
2050	4.55581
2055	4.45676
2060	4.55177
2065	4.62748
2070	4.60565
2075	4.49026
2080	4.3588
2085	4.31109
2090	4.37269
2095	4.46841
2100	4.50899