Year	Percent
1950	11.41535
1955	11.11745
1960	11.66137
1965	12.85617
1970	12.95971
1975	12.94492
1980	13.15137
1985	13.03117
1990	13.2317
1995	13.09857
2000	12.71697
2005	12.52555
2010	12.00106
2015	11.29647
2020	10.12998
2025	9.00892
2030	8.57945
2035	8.14644
2040	7.65855
2045	7.13215
2050	6.65405
2055	6.26486
2060	5.95259
2065	5.71509
2070	5.51526
2075	5.35309
2080	5.19294
2085	5.07302
2090	4.98424
2095	4.92769
2100	4.88478