Year	Percent
1950	9.04125
1955	9.44298
1960	8.09657
1965	7.73513
1970	7.95721
1975	7.6777
1980	7.10179
1985	6.12865
1990	5.2112
1995	5.68045
2000	6.45064
2005	6.29778
2010	5.9072
2015	5.8534
2020	5.13106
2025	5.2601
2030	5.53346
2035	5.65673
2040	5.58119
2045	5.42359
2050	5.2782
2055	5.24779
2060	5.33397
2065	5.41021
2070	5.39124
2075	5.28766
2080	5.16984
2085	5.10604
2090	5.10386
2095	5.12008
2100	5.11098